<template>
  <div class="todo-footer">
    <label>
      <input type="checkbox" @change="SelectAllBox" />
    </label>
    <span>
      <span>已完成{{ done }}</span> / 全部{{ all }}</span
    >
    <button class="btn btn-danger" @click="clearAll">清除已完成任务</button>
  </div>
</template>

<script>
export default {
  name: "TodoBottom", //这里必须为字符串

  computed: {
    all() {
      return this.todoList.length;
    },
    done() {
      let num = 0;
      this.todoList.forEach((item) => {
        if (item.does === true) num++;
      });
      return num;
    },
  },
  methods: {
    clearAll() {
      if (confirm("确认清除应完成的任务？")) this.$bus.$emit("clearAllCompleted");
    },
    SelectAllBox() {
      console.log("复选框");
      this.$bus.$emit("chageAll");
    },
  },

  props: ["todoList"],
};
</script>

<style scoped>
/*footer*/
.todo-footer {
  height: 40px;
  line-height: 40px;
  padding-left: 6px;
  margin-top: 5px;
}

.todo-footer label {
  display: inline-block;
  margin-right: 20px;
  cursor: pointer;
}

.todo-footer label input {
  position: relative;
  top: -1px;
  vertical-align: middle;
  margin-right: 5px;
}

.todo-footer button {
  float: right;
  margin-top: 5px;
}
</style>>